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Influence of mosses on soil hydraulic
conductivity, penetration resistance
and water repellency six years after a
post-fir...
2
Salvage logging treatment:
extraction on burnt wood
Valencia, Spain, 2012
Photo: J. Mataix-Solera
Forest Fire in Sierra de Mariola Natural Park, July 2012
- Soils developed over marls
- Salvage logging treatment with hea...
4
Key roles:
- Soil stability
- Protection from erosion
6 years later…
Photos: J. Mataix-Solera
Methodology
5
Over Mosses
Under Mosses
Bare Soil
SALVAGE
LOGGING
CONTROL
Control (C): 25 points BS + 25 points M
Salvage L...
6
• Hydraulic conductivity, Kh
Mini-Disk Infiltrometer
• Penetration resistance, PR
Pocket Penetrometer
• Water Repellency...
7
Hydraulic conductivity, Kh (mm/h)
Biocrust can influence the
local hydrological cycles by
modifications in soil
porosity...
8
Penetration Resistance, PR (kg/cm2)
Higher developmental stages
of the biocrust are related to
higher penetration resist...
9
Water Repellency, WR (s)
Hydrophobic characters of the
mosses may help trapping
water near the soil surface.
Main Results
Conclusions
• Post-fire salvage logging affected in a medium-term to the percentage
of soil covered by mosses
• Our result...
Influence of mosses on soil hydraulic conductivity, penetration resistance and water repellency six years after a post-fir...
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Ms Minerva García-Carmona, Universidad Miguel Hernández, Spain. Global Symposium on Soil Erosion (GSER19), 15 - 17 May 2019 at FAO HQ.

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Influence of mosses on soil hydraulic conductivity, penetration resistance and water repellency six years after a post-fire salvage logging treatment

  1. 1. Influence of mosses on soil hydraulic conductivity, penetration resistance and water repellency six years after a post-fire salvage logging treatment Minerva García-Carmona, Victoria Arcenegui, Jorge Mataix- Solera, Fuensanta García-Orenes- Department of Agrochemistry and Environment, University Miguel Hernández, Spain 1
  2. 2. 2 Salvage logging treatment: extraction on burnt wood Valencia, Spain, 2012 Photo: J. Mataix-Solera
  3. 3. Forest Fire in Sierra de Mariola Natural Park, July 2012 - Soils developed over marls - Salvage logging treatment with heavy machinery, February 2013 - Intense precipitation (50mm), September 2013 3 Photo: J. Mataix-Solera
  4. 4. 4 Key roles: - Soil stability - Protection from erosion 6 years later… Photos: J. Mataix-Solera
  5. 5. Methodology 5 Over Mosses Under Mosses Bare Soil SALVAGE LOGGING CONTROL Control (C): 25 points BS + 25 points M Salvage Logging (SL): 25 points BS + 25 points M Cover of mosses: 58.8% SL vs. 78.4% C Photo: J. Mataix-Solera Google Earth, 2017
  6. 6. 6 • Hydraulic conductivity, Kh Mini-Disk Infiltrometer • Penetration resistance, PR Pocket Penetrometer • Water Repellency, WR Water Drop Penetration Time (WDPT) test Methodology Photos: J. Mataix-Solera
  7. 7. 7 Hydraulic conductivity, Kh (mm/h) Biocrust can influence the local hydrological cycles by modifications in soil porosity, absorptivity, roughness, aggregate stability, texture, pore formation and water retention. Main Results
  8. 8. 8 Penetration Resistance, PR (kg/cm2) Higher developmental stages of the biocrust are related to higher penetration resistance. Only 6 years after a perturbation may not be enough time to develop a complex state of the biocrust Main Results
  9. 9. 9 Water Repellency, WR (s) Hydrophobic characters of the mosses may help trapping water near the soil surface. Main Results
  10. 10. Conclusions • Post-fire salvage logging affected in a medium-term to the percentage of soil covered by mosses • Our results did not show significant detrimental consequences regarding the hydraulic conductivity, penetration resistance and water repellency parameters as a consequence of the management practice. • Salvage logging was a very aggressive practice with soils over marls, but the development of vegetation like mosses forming part of a biocrust could be protecting the soil in a medium-term. • We recommend to forest managers to take into account this natural recovery in order to do not affect them if any post-fire management is planned. • More research is needed in order to identify if mosses are improving significantly other soil properties. 10

Ms Minerva García-Carmona, Universidad Miguel Hernández, Spain. Global Symposium on Soil Erosion (GSER19), 15 - 17 May 2019 at FAO HQ.

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